Here's the simplest solution with a clear selector: function select_option(i) { return $('span#span_id select option[value="' + i + ... ... <看更多>

Link for all dot net and sql server video tutorial playlistshttps://www.youtube.com/user/kudvenkat/playlists?sort ... ... <看更多>

getElementByClassName vs the jQuery selector. Here are the results for Chrome 25: $('.class') - 4355 operations per second; getElementsByClassName('class') - ... ... <看更多>